JP3076869B2 - Edge sewing device for single cloth products such as handkerchiefs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hemming device for fabric products, and more particularly, to towels, handkerchiefs, place mats, and the like.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an edge stitching device suitable for performing edge stitching of a single-cloth product such as a muffler cover or a scarf.

[0002]

[Prior Art] Towels, handkerchiefs, place mats,
In order to make a single cloth product such as a muffler cover or a scarf, it is necessary to cut the raw cloth into a predetermined shape and perform at least edge stitching such as lock stitching so that the periphery of the cut cloth does not fray. No. Regarding this edge stitching, for example, as shown in Japanese Patent Application Laid-Open No. Hei 4-26480 and FIG. JP 7
As described in Japanese Patent Application Publication No. 24619, there are two types of edge stitching methods in which each corner is rounded.

[0003] In addition, the edge sewing of each side of a rectangular single-cloth product is performed by moving the single-cloth product itself straight with respect to a sewing machine needle. Even if it is rounded, the edge stitching of that part,
Basically, this is performed by rotating the single-cloth product itself by 90 degrees with respect to the sewing needle. However, if the rotation of the single fabric product itself with respect to the sewing machine needle is performed while the sewing machine needle is stopped, for example, as shown in FIG.
At each corner, the edge stitches are orthogonal to each other,
If the rotation of the single fabric product is performed in parallel with the drive of the sewing machine needle, a rounded edge stitch is obtained at each corner.

[0004] As another edging device for performing edging on a single-cloth product as described above, there is known a "squaring device for rectangular fabric ear stitching" disclosed in Japanese Patent Application Laid-Open No. 4-189388. As shown in FIG. 28A, this sewing device
A cloth feeder, a sewing machine for end-stitching a rectangular cloth at a needle drop position on the cloth feeder, a screw shaft attached to a mounting stand provided on the cloth feeder and extending in the cloth feed direction, and its rotation drive A mechanism, a nut body screwed to the screw shaft, a swing arm and a drive mechanism attached to the nut body so as to be horizontally swingable, and a movable body and a lift drive mechanism attached to the swing arm so as to be able to move up and down, And an adsorbent provided on the movable body. " According to the edge stitching apparatus as described above, it is possible to make a handkerchief or the like by end-sewing a rectangular cloth without any need for manual operations. It is considered that there is an effect that uniform edge stitching is performed because all of the feeding and turning of the rectangular cloth to the position are performed mechanically, '' however, when the inventor of the present invention examined, It is considered to include the following points to be solved.

[0005] (1) For example, after rotating a predetermined angle from (c) to (c) in FIG. 28, in order to ensure the hooking of the needle, the needle drop position should be above the single cloth product.
As shown in the same manner, the single-cloth product must be returned slightly downward in the figure, and this operation is required at all four corners, so that a so-called loss time occurs. (2) Above all, it is not possible to make the round stitches at the corners round, that is, to perform the round stitches.

Accordingly, Japanese Patent Application Laid-Open No. 7-241659 discloses "providing a sewing apparatus capable of automatically sewing a cloth product having a rounded corner and the entire periphery thereof being overlocked by overlock sewing". A desired sewing device has been proposed. As shown in FIG. 27, this sewing apparatus is configured such that "the corner of the square presser plate 30 placed on the support table 20 is an arc, and the center of curvature of the arc-shaped corner, the center of curvature of the arc center, etc. The pin 33 protrudes from the sewing machine 2. The cloth feeder 60 is provided to feed the cloth holding plate 30 forward with respect to the sewing machine 2. The holding device 80 rotatably holds the corner pin 33 facing one side of the sewing machine needle. And a rotation device 90 for rotating the cloth presser plate 30 by a predetermined angle around the corner pin 33 held by the holding device 80. The cloth placed on the support table 20 is provided with the cloth presser plate 20.
When the corner pin 33 faces one side of the sewing machine needle, the corner pin 33 is held by the holding device 80, and the rotation device 90 holds the corner pin 33. An operation of rotating the cloth presser plate 30 by a predetermined angle is sequentially performed, and the sewing machine 2 is operated when the cloth is moved to perform the overlock sewing while cutting the peripheral edge. "
Things.

Therefore, according to the sewing apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-24169, it is considered that it is possible to perform edge sewing at each of rounded corners. According to the examination of the above, it is considered that the following points must be solved. (3) In order to rotate the single fabric product, the block of the holding device 80 is lowered and fitted to the pin 33, and the fabric feeding device 6 is rotated.
It is necessary to raise the block 0 and lower the pad of the presser cylinder to prevent the cloth presser plate 30 from floating. In addition, the hook of the rotating device 90 must be advanced to engage the pin 33, and this hook must be retracted. During this time, the hemming operation remains stopped, and a time loss occurs during this time. (4) Above all, there are too many components and the overall structure of the edging device is complicated.

Therefore, this time, Japanese Patent Application Laid-Open No. Hei 7-124357 aims to “automating the edge stitching of four sides of a rectangular fabric and the edge stitching of a fabric having a curved corner or side”. The fabric feeder 2, a sewing machine pressing plate mounting portion 41 for end-stitching the fabric at a needle drop position on the fabric feeder 2, and a fluid port 51 a in the upper direction of the fabric feeder 2.
A movable mount 3 movable in the axial direction, a movable mount mounted on the movable mount 3 and movable in the axial direction of the second fluid pressure chamber 55, and a movable up and down in the axial direction of the fluid port 53a and around the axis of the fluid port 53a. And a pressing plate 6 attached to the elevating rotary member. "The sewing machine for sewing the edge of the fabric edge" has been proposed in which the sewing of the edge of the fabric is performed by controlling the movement of the movable frame 3 and the elevating and lowering member while the fabric is pressed against the fabric feed table 2 by the pressing plate 6.

However, the sewing apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-124357 controls the movement of the pressing plate 6 pressing the single cloth product in the direction from the second fluid pressure chamber 55 to the fluid port 51a by so-called numerical control. Since the rotation angle control of the pressing plate 6 is performed while always electrically monitoring, the jig does not need to be changed at all in accordance with the shape change of the single cloth product, but the operation is extremely slow. -ing In addition, in this numerically controlled device, every time the form of the single-cloth product changes, the control numerical value and the jig must be changed, and the numerical control may be able to perform the edge stitching accurately. However, it is considered that the workability is poor and the cost of the product is increased.

[0010] In other words, single-cloth products such as towels, handkerchiefs, place mats, and mache covers are very inexpensive and are used in large quantities. If a certain edge stitch is performed by a complicated and large-sized edge stitching device or a edge stitching device that causes a loss time in the edge stitching operation, the unit price of the product is increased, which is not preferable. . In particular, even when a single cloth product has a rounded corner, the edge sewing operation must be performed at high speed by an edge sewing device having a simple structure.

[0011] In addition, single cloth products such as towels and handkerchiefs
Not only the size but also the shape are various, and the edge stitching portions are variously changed accordingly. That is, taking a towel as an example, there are squares as shown in (a) and (b) of FIG. 25 and rectangles as shown in (c) and (d) of FIG. As shown in FIGS. 25 (a) and (c), the method may be "square stitching" so as to form a right angle, or (b) of FIG.
As shown in (d) and (d), "circular stitching" may be performed to assume a rounded shape. Further, the shape of the single cloth product may be a hexagon as shown in FIG.
There is also a triangle like If a change in the size is added to the change in the shape, the setting method in the case of performing the edge stitching operation mechanically may be of various types, whether a mechanical type or a numerical control type.

In such a case, it is almost impossible to manufacture so-called towels having a small number of lots at a low cost in a short time in each of the above-mentioned conventional methods, and it can be used only for mass production in practice. It is likely that problems will arise. In other words, it is necessary to easily change the size and form of a single-cloth product as a device for performing the edge stitching operation of a single-cloth product such as a towel. Is also required.

On the other hand, in order to increase the speed of the operation of the machine / device, it is necessary to support safety at the time of malfunction. In other words, in a machine or a device, a malfunction may occur due to an unexpected situation.However, if each part moves at a high speed during such a malfunction, the whole machine or device may be destroyed. Each component must be capable of performing a certain amount of "escape operation".

The inventor of the present invention has conducted various studies on how to perform the edge stitching on this kind of single-cloth product at high speed and safely, and without incurring a high cost of the product. As a result, the present invention has been completed.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances in this type of edging device, and the problem to be solved is to increase the speed of edging operations for single cloth products and the like. The simplification, versatility, and safety of the entire device for enabling this high-speed operation.

That is, the object of the invention according to claim 1 is that high speed versatility and high versatility can be achieved for edge sewing work of various forms of single-cloth products, and the overall configuration of the apparatus is extremely low. An object of the present invention is to provide an edge stitching apparatus which can be simplified as a result, and as a result, can reduce costs for edge stitching of a single cloth product or the like.

The object of the second aspect of the present invention is to provide a single-cloth product in order to more reliably achieve the object of the first aspect of the present invention. Another object of the present invention is to provide an edge stitching apparatus capable of shortening the time required for edge stitching of a single fabric product by making it possible to change the edge stitching operation very easily.

[0018]

Means for Solving the Problems In order to solve the above problems, first, means adopted by the invention according to claim 1 will be described with reference numerals used in the following embodiments.
"A pressing plate 30 for pressing a workpiece W on a sewing table 20 horizontally supported by the machine frame 10, a guide beam 60 for supporting a rotary shaft 40 integrated with the pressing plate 30, 60
, A pressing device 30 and a rotating shaft 40
The turning member 80 integrated through the
In order to guide the plurality of guide rollers 81 provided on the
The press plate 30 pressing the workpiece W and the sewing machine 200 that performs the edge stitching of the workpiece W pressed by the pressing plate 30 are provided. An edge sewing device 100 in which the back and forth movement of the rotating member 80 and the rotation of a predetermined angle can be performed only by the reciprocating movement of the guide beam 60 by the driving device 70, wherein the guide rail 90 is moved in parallel with the machine frame 10. By assembling the guide rails 9 as much as possible, the guide rails 9 can be used for corner-stitching the corners of each workpiece W.
The arrangement of the guide groove 90b outside the needle position of the sewing machine 200 and the arrangement of the guide groove 90b inside the needle position at the time of circular sewing at the corner of each workpiece W can be freely selected. The guide roller engages with the stopper 91 in the guide rail 90 so that the pressing plate 30 can be retracted from the sewing machine 200 when returning to the original position integrally with the rotating member 80. 81 and guide rollers 81 before and after it
Guide groove 9 of each guide roller 81 in accordance with the change in the distance between
0b, the outlet 92 and the inlet 93 of the guide rail 90 are made sufficiently large so that the rotating member 80 and the pressing plate 30 are connected to the rotating shaft 40.
An edge stitching apparatus 100 for a single-cloth product, characterized in that the edge sewing device 100 "can be exchanged with respect to the other.

That is, the sewn device 100 according to the present invention.
Is another device on the sewing table 20, namely, the cutting device 30
0 and the work material W to be a single-cloth product fed by the work cloth feed plate 350 is sewn on the sewing table 2 by the pressing plate 30.
The sewing machine 200 is driven while pressing and moving the press plate 30 while moving and rotating the press plate 30, thereby performing edge stitching for a single cloth product. In other words, the edge sewing device 100 according to the present invention performs the edge sewing while pressing the workpiece W onto the sewing table 20 by the pressing plate 30 only in the prior art shown in FIGS. 27 and 28. However, in the edging device 100 according to the present invention, first, the driving method of the pressing plate 30 itself is completely different from that of the related art.

The pressing plate 30 is regulated and controlled by a rotating shaft 40 integrated with the pressing plate 30 and a rotating member 80 provided on the upper end side thereof. In other words, it is done indirectly. Needless to say, as shown in FIG. 23 or FIG. 26, the pressing plate 30 is provided for the workpiece W pressed on the sewing table 20.
Cutting a portion slightly outward from the pressing plate 30 into a predetermined shape with scissors on the sewing machine 200 side;
Since it is necessary to enable edge sewing with the sewing machine needle 210, the overall shape is similar to a single cloth product such as a handkerchief, and is slightly smaller than a single cloth product.

The rotating member 80, which is located immediately above the pressing plate 30, has a plurality of arms 80a corresponding to the corners of the pressing plate 30, and is provided at the tip of each arm 80a. The provided guide rollers 81 are positioned one-on-one on the corners of the pressing plate 30, and the relationship among the pressing plate 30, the guide roller 81 on the rotating member 80 side, and the workpiece W is illustrated in FIG. 21 or FIG.

In addition, single cloth products such as towels and handkerchiefs
As shown in FIG. 25 or FIG. 26A, since it is a general practice to use a single-cloth product having a rectangular shape (a rectangular shape as well as a rectangular shape), the pressing plate 30 is formed in a substantially rectangular shape, and the rotating member is formed. The following description will focus on the case of a four arm 80 having four arms 80a and a guide roller 81, but the present invention is based on the hexagonal shape shown in FIG. It is also possible to perform edge stitching on a cloth product or a triangular cloth product shown in FIG. 26C. In this case, the shapes of the pressing plate 30 and the rotating member 80 are changed to those shown in FIG. What is necessary is just to show what was shown by the virtual line in (b) or (c).

The operation of the rotating member 80 for regulating the movement of the pressing plate 30 will be described below. This rotating member 80 is integrated with the upper end side of the rotating shaft 40. In the embodiment described below, as shown in FIGS. 6, 12 to 14, a support device 50 is formed. The cylinder member 53 and the rotary shaft 40 are integrated with the upper end of
As a result, the rotation member 80 is integrated with the rotation shaft 40 because the rotation member 80 and the connection guide member 43 are integrated. This is because when the workpiece W is pressed by the pressing plate 30, the rotating shaft 40 has to be raised once so that the workpiece W comes under the pressing plate 30. In this case, each guide roller 81 of the rotating member 80 is
You have to stay on the
The vertical movement of the rotation shaft 40 with respect to the support device 50 is
This is to prevent it from being given to 0.

The four arms 80a of the rotating member 80
As shown in FIG. 3 or FIG. 14 and the like, guide rollers 81 are provided at the front end of the case (when the object to be sewn is a rectangular single cloth product), and at least one of these guide rollers 81 is provided. One is the guide groove 90b of the guide rail 90.
Is to be engaged inside. On the other hand, the rotating shaft 40 supporting the rotating member 80 is similar to that shown in FIGS.
As shown in the figure, the workpiece W is supported via a supporting device 50 on a guide beam 60 having a guide rail 61 in a direction perpendicular to the direction in which the workpiece W is loaded. The apparatus 70 is driven to reciprocate in a direction parallel to the direction in which the workpiece W is loaded, that is, in the left-right direction in FIG.

Now, with reference to FIGS. 2, 20 and 21, how the rotating member 80 moves and rotates by the reciprocating drive of the driving device 70 will be described.
Is transported to the right side of the sewing table 20 shown in FIG. 2 by the cutting device 300 and the work cloth feed plate 350 described later, the work cloth feed plate 350 and the pressing plate 30 are alternated. When the rotation shaft 40 is moved downward by the operation of the support device 50, the pressing plate 30 presses the workpiece W onto the sewing table 20, for example, as shown in FIG. At this time, the rotating member 80 located immediately above the pressing plate 30 is at the position shown at the center in FIG.
As shown in FIG. 20, the two guide rollers 81 of the rotating member 80 are engaged in the guide grooves 90b of the guide rail 90. In this state, the rotating member 80 is located on the retreating end side from the inlet 93 on the guide rail 90 side.

Next, when the ball screw shaft 72 is rotated by operating the driving device 70, the ball screw shaft 7 is rotated.
2 is moved forward (to the right in FIG. 7), and is rotated by two guide rollers 81 engaged in the guide grooves 90 b of the guide rail 90.
0 is translated in parallel to the position shown on the right side in FIG. 4, and accordingly, the workpiece W pressed on the sewing table 20 by the pressing plate 30 via the rotating shaft 40 is also moved in parallel. Be moved.

The edge stitching device 10 of the embodiment described below
0, between the cutting device 300 and the sewing machine 200, FIG.
As shown in FIG. 6 and FIG. 6, a label input unit 360 is disposed, and the label input unit 360 allows the workpiece W to be processed.
A label to be attached to a towel or the like is inserted between the pressure plate 30 and the pressing plate 30.

By the above-described parallel movement, the pressing plate 30 and the workpiece W pressed by the pressing plate 30 are moved to the sewing machine needle 210 of the sewing machine 200 as shown in FIGS.
, And during this time, straight stitching of one side of the workpiece W is performed. In the sewing machine 200 of the present embodiment, the trimming blade is provided immediately before the sewing needle 210, so that the edge sewing by the sewing needle 210 is performed substantially simultaneously while trimming one side of the workpiece W. .

When the trimming and line stitching of the first side of the workpiece W are completed, the same operation must be performed on the next side. Before performing the operation on the next side,
The corners of the single piece product must be sewn. As described above, it is necessary to perform two types of edge stitches, that is, corner stitches and circular stitches, at the corners of the single-fabric product. Hereinafter, as shown in FIG. 25A or FIG. A description will be given focusing on square sewing. In order to perform this corner stitching, as shown in FIG. 22, a pressing plate 30 having a substantially right-angled corner is used, and a corner of the pressing plate 30 is The rail drive device 400 must be arranged at a deeper position (for example, at the position shown in FIG. 14), but the arrangement is adjusted by the rail drive device 400.

As shown in FIGS. 7 and 8, the rail drive device 400 supports the guide rail 90 so as to be able to move parallel to the machine frame 10 (vertically in FIG. 7). When performing the square stitching of the workpiece W, the following adjustment is performed by rotating the shaft handle 417. That is, when performing the corner stitching, it is necessary to make the corner portion of the workpiece W deeper than the sewing machine needle 210. Therefore, by rotating the shaft handle 417, the rail base 411 of the guide rail 90 is moved. 8 is moved to the right in FIG. As a result, the guide groove 90b of the guide rail 90 supported on the rail base 411 moves to the right in the drawing of FIG. 8, and the pressing groove located immediately below the guide roller 81 of the guide groove 90b. The corner of the plate 30 also moves to the left in FIG. 8, and the corner of the pressing plate 30 and the sewing machine needle 210 are adjusted to the positions shown in FIGS. It is.

If the pressing plate 30 is moved as described above and adjusted as described above, the linear shape of the first side of the workpiece W can be obtained as shown in FIG. Is completed.

When the first edge of the workpiece W is completely sewn, the rotating member 80 is at the position shown by the solid line in FIG. 20 and the two guide rollers engaged in the guide groove 90b. The guide roller 81 on the right side of the drawing
And the guide roller 81 on the left side of the drawing is
0b is in contact with the right end surface of the stopper 91 protruding into the inside. Here, the driving device 70 operates to operate the ball screw shaft 7.
2 starts to be reversed, and at the same time, the opening / closing device 9 of the outlet 92
The gate member 95 is rotated as shown by the imaginary line in FIG. 10, the gate member 95 is retracted, and the delivery port 92 in the guide groove 90 b is operated. Is released.

When the drive motor 71 and the like of the drive device 70 are operated to rotate the ball screw shaft 72 in the reverse direction, the guide beam 60 is driven so as to move backward. That is, the driving force is applied such that the center of the rotating member 80 shown in FIG. 20 shifts leftward in the figure. However, one guide roller 81 on the rotating member 80 side is provided in the guide groove 9 in the guide rail 90.
0b, a part of the leftward force applied to the center of the rotating member 80 causes the rotating member 80 to move in the direction of the arrow shown in FIG. Will be converted to the rotational force. At this time, a force for pulling the pivot member 80 away from the guide rail 90, that is, an upward force in FIG.
Since the rotating member 80 is supported by the guide beam 60 via the rotating shaft 40 and the support device 50, the rotating shaft 40 supporting the rotating member 80 moves upward in FIG. .

From the above, the guide beam 60 is driven by the driving device 7.
0, the rotating member 80 moves to the position shown in FIG.
The rotation and movement as shown in Fig. 4 will be started. That is, the rotating member 80 starts to rotate around the guide roller 81 shown by the reference numeral (b) in FIG. 20, and the guide roller shown by the reference numeral (a) immediately before the guide roller 81. The guide rail 81 exits outward (upward in FIG. 20) from a delivery port 92 formed on the corresponding guide rail 90 side. The engagement with 90 is released. The rotating member 80 rotates counterclockwise and moves to the left in FIG. 20 while drawing a locus as shown in FIG.

On the other hand, the guide roller 81 indicated by reference numeral (c) located immediately after the guide roller 81 locked by the stopper 91 in the guide rail 90 is guided by a guide member 94 provided on the guide rail 90. Thus, the guide rail 90 is inserted into the guide groove 90b of the guide rail 90 from the inlet 93. That is, the inlet 93 is normally closed as shown in FIG. 11B by the front end 94a of the guide member 94 provided here, but is shown in FIG. Thus, the guide roller 81 on the rotating member 80 side
Is advanced to enter the guide groove 90b of the guide rail 90 by the force of the guide roller 81. In other words, FIG.
As shown in (2), when the guide roller 81 moves toward the inlet 93 and the lower part thereof abuts against the inclined surface 94b of the guide member 94, the guide member 94 resists the urging force of the compression spring 98. 20. As a result, the guide roller 81 indicated by reference numeral (c) in FIG. 20 enters the guide groove 90b of the guide rail 90 at the same time when the inlet 93 is opened. is there.

In the edge sewing device 100, the delivery port 9
2 and a gate member 95 closing the inlet 93 respectively
The length of the guide member 94 parallel to the guide direction of the guide rail 90 is sufficiently long, and a handkerchief having a size within this length is sufficient to perform the edge stitching. Is shown. Of course, when the rectangular workpiece W as shown in (c) of FIG. 25 is to be sewn, as shown in (b) of FIG. Although the dimensions between the tips of the gate members 80a are different, each gate member 25 and guide member 9
By making each of them 4 long enough, each outlet 9
2 and the length of the outlet 93 are sufficient.
Edge stitching of the workpiece W having different lengths on each side can be performed without any trouble.

FIG. 22 is an enlarged view of the turning trajectory of the pressing plate 30 and the workpiece W via the turning member 80 for the right angle processing (square stitching). That is, when the first side is sewn, the workpiece W and the pressing plate 30 pressing the workpiece W onto the sewing table 20 are at the position shown on the right side of FIG. It is located on the lower left side of the figure. Of course, the sewing machine 200 is
0, the sewing machine needle 210
Does not change. Here, if the rotating member 80 is rotated as described above, the tip of the second side of the workpiece W is located to the left of the sewing needle 210 as shown on the left side of FIG. become. Therefore, if the workpiece W is advanced as it is, the edge stitching of the second side is performed while making the corner portion sandwiched by the first side a right angle.

Thereafter, when the driving device 70 is operated to advance the guide beam 60, the rotating member 80 is moved by the two guide rollers 81 into the guide groove 90 of the guide rail 90.
b, the workpiece W is moved in parallel with the loading direction of the workpiece W, and is pressed by the pressing plate 30 integrated with the rotating member 80. It will advance against 210. This allows
The second side of the single-piece product is trimmed and sewn.

As described above, when the cutting and edge stitching of the second side of the workpiece W are performed,
The guide roller 81 shown by the reference numeral (c) in the middle can get over the stopper 91 in the guide rail 90 and be locked to it. By repeating the above operation, trimming and edge stitching of the third side and the fourth side of the workpiece W are performed.

When the edge sewing is completed and the single cloth product is completed,
The pressing by the pressing plate 30 is released, and the single-cloth product on the sewing table 20 is carried out onto the elevating table 514 by the product transfer device 500 shown in FIGS. 18 and 19. On the other hand, the pressing plate 30 returns to its original position, that is, the position shown in the center of FIG. 4 together with the rotating member 80, and the next workpiece already fed by the work cloth feeding plate 350 to this position. The work material W is pressed.

When the pressing plate 30 returns to the original position and goes to take the following workpiece W, the rail driving device 400
Imposes the following functions: The first is to enable the end thread processing in the sewing machine 200 at the time of completion of the hemming, and the second is to press the sewing machine 20 with the pressing plate 30 when returning.
This is to avoid interference with 0.

That is, the rail driving device 400 is the same as that shown in FIG.
As shown in FIG. 8, a rail base 411 supporting the end of the guide rail 90 on the rail 410 on the machine frame 10.
And a retreat cylinder 414 for independently pulling in each other.
13 performs the first operation, and the retraction cylinder 414 performs the second operation.

Now, the case of performing circular stitching at the corner of the workpiece W will be described with reference to FIGS. 23 and 24. In this case, as shown in FIG. Then, the sewing machine needle 210 is set to be outside the guide groove 90b of the guide rail 90. In this case, the rounded corner adjustment shaft 415 of the rail drive device 400 is rotated by the rotation operation of the shaft handle 417 to adjust each rail base 411 outward, whereby the guide groove 90b, the sewing needle 210 and Are brought into the state shown in FIG. When performing the circular stitching, as shown in FIG. 23A and the like, a pressing plate 30 larger than the rotating member 80 is used.

After the adjustment as described above, straight edge stitching of the first side is performed as shown in FIGS. 23A to 23B. Immediately before the straight edge stitching is completed,
As shown in FIG. 23A, the rotating member 80 starts rotating. Then, at the first corner of the workpiece W, as shown in FIGS. 23 (c) and (d) and FIG. 24, circular sewing is performed. The end of the first circular stitch is also the start of the straight edge stitch on the second side.

The rotating member 8 during the above-described circular sewing operation
The rotation operation of the guide rail 9 is exactly the same as that described in the description of the square stitching based on FIG.
It can be performed only by adjusting the position of 0 and replacing the pressing plate 30. Of course, the replacement work of the pressing plate 30 and the rotating member 80
According to the second aspect of the present invention described below, it can be performed more effectively and easily.

As described above, the edging device 100 according to the present invention
According to FIG. 26, it is possible to manufacture a single-cloth product in which edge stitching is formed as shown in FIG. 26. However, since each operation is performed mechanically, it can be performed at a very high speed. Will be In particular, in the edge sewing device 100, the workpiece W
The movement and rotation of the guide beam 60 can be performed only by the reciprocating operation of the guide beam 60 by the driving device 70, so that there is no accumulation of errors and the structure is very simple. Therefore, the production of a single-cloth product subjected to edge stitching by the edge stitching apparatus 100 is 5 times less than that of a conventional one.
It can be performed at a speed of about 10 to 10 times.

Further, the edge sewing device 10 for performing this high-speed edge sewing is provided.
At 0, various safety measures such as the rail drive device 400 are taken, so that even if a part fails or a foreign object enters and malfunctions, the whole is completely protected. And it does not destroy much.

In the edging device 100, for example, the guide rail 90 for the sewing needle 210 of the sewing machine 200 is used.
By changing the position, the edge sewn at the corner of the single fabric product can be freely performed, whether it is a right-angled one or a rounded one.

In order to solve the above-mentioned problem, means adopted by the invention according to claim 2 will be described by attaching reference numerals used in the description of the following embodiments. Regarding the device 100, “The pressing plate 30 is attached to the lower end of the rotating shaft 40 so as to be freely detachable in the horizontal direction, and a rectangular mounting portion 44 is formed on the upper portion of the rotating shaft 40. The rotation member 80 is pressed and fixed to the mounting portion 44 side so that the mounting hole 82 formed in the center of the member 80 is inserted, and the rotation member 80 and the pressing plate 30 are mounted on the rotation shaft 40 side. In a certain direction. "

That is, the hemming device 1 according to the second aspect
In the case of 00, the replacement work of the pressing plate 30 and the rotating member 80 corresponding to the square sewing or the circular sewing of the workpiece W is greatly simplified by the above-described configuration.

First, as shown by an arrow in FIG. 12, when the handle 46a provided at the lower end of the rotating shaft 40 is lifted to perform the work of replacing the pressing plate 30, the handle 46a is provided at the lower end of the handle 46a. The stopper 46 detaches from the locking hole 32b on the pressing plate 30 side. As a result, the connecting member 32 on the pressing plate 30 side and the coupling plate 45 on the rotating shaft 40 side are free from each other, and if the pressing plate 30 is pulled to the left in FIG. Press plate 30
Is completely separated from the rotation shaft 40. Therefore, if another pressing plate 30 is mounted on the rotating shaft 40 in the reverse order to the above, the replacement operation of the pressing plate 30 is completed. Of course, the stopper 46 is provided inside the handle 46a or the like.
Since a spring for preventing the engagement hole 32b on the zero side from being engaged always is incorporated, the stopper 46 is always stabilized with a constant urging force against the pressing plate 30 side.

What is important in the replacement operation of the pressing plate 30 is that the connecting plate 45 is fixed to the rotating shaft 40 and rectangular, and the dovetail groove 32a on the pressing plate 30 side is Since the pressing plate 30 is of a size to be fitted, the pressing plate 30 at the time of completion of the mounting is always determined to have a fixed direction with respect to the rotating shaft 40. In other words, as shown in FIG. 21 and FIG. 23, the positional relationship between the pressing plate 30 and the rotating member 80 must always be kept constant. The positional relationship between the pressing plate 30 and the rotating member 80 is automatically determined, and the positional relationship between the rotating member 80 and the rotating shaft 40 is automatically determined as described later. Is automatically taken in a certain direction.

The replacement of the rotating member 80 is easy, as shown in FIGS. 16 and 17.
First, as shown in FIG. 15, a rectangular mounting hole 82 is formed substantially at the center of the rotating member 80, and a rectangular mounting portion to be fitted into the mounting hole 82 is formed. 44
However, as shown in FIGS. 12 and 13, they are integrally formed at the upper end of the rotating shaft 40. And, this rotating member 80
Is fixed to the rotary shaft 40 as shown in FIG.
The pressing leg 47 is in contact with the upper surface of the portion close to 2 to press the rotating member 80 onto the mounting portion 44.

That is, when the rotating member 80 is fixed to the upper end of the rotating shaft 40, as shown in FIG. 16A, the mounting member 44 on the rotating shaft 40 and each pressing leg 47 sandwich the pressing member 47. The vertical movement is restricted. As shown in FIG. 16B, the mounting portion 44 on the rotary shaft 40 is fitted into the rectangular mounting hole 82 on the rotating member 80. Therefore, the relative rotation between the two is restricted.

In order to replace the rotating member 80, the user operates the pressing handle 48, as shown in FIG.
As shown in (2), the pressing of the rotating member 80 by each pressing leg 47 is released such that the lower end of each pressing leg 47 is on the mounting portion 44 on the rotating shaft 40 side. The rotating member 80 is simply fitted into the mounting portion 44, and if each pressing leg 47 pressing the upper surface is retracted as shown in FIG. As shown in (a), it can be easily removed from the upper end of the rotating shaft 40 through the outer periphery of each pressing leg 47. Needless to say, another rotating member 80 is fixed to the upper end of the rotating shaft 40 by an operation reverse to the above operation.

As described above, the edging device 100 according to the second aspect exhibits the same operation and function as that according to the first aspect, and the pressing plate 30 against the rotating shaft 40.
Of the pressing plate 30 and the rotating member 80 can be reliably secured with the necessary directionality.
Can be exchanged very easily. This also enhances the versatility of the edging device 100.

[0057]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, each of the above-mentioned inventions will be described with respect to a hemming apparatus 100 as an embodiment shown in the drawings. Since the invention includes both of the two inventions, the description of the edging apparatus 100 according to this embodiment will be mainly described below.

As shown in FIGS. 1 to 4, the edge sewing apparatus 100 includes a sewing table 20 which is horizontally supported by the machine frame 10 and which supports a workpiece W before it is formed into a single cloth product. A pressing plate 30 formed to have a shape similar to that of the completed single cloth product in order to press and hold the workpiece W on the sewing table 20, and a workpiece sent on the sewing table 20 while being pressed by the pressing plate 30. And a sewing machine 200 that performs edge stitching of the workpiece W. In the edge sewing device 100, the left side portion (retracted end of the pressing plate 30) in FIGS.
The workpiece W to be made into a single-cloth product is carried into the sewing table 20 by the cutting device 300, and the sewing machine needle 210 of the sewing machine 200 on the near right side in the drawing, and a non-illustrated proximity to this. Workpiece W with scissors
After the trimming and edge stitching of the surrounding area are performed, it is further carried out as a single-cloth product to a discharge position on the right side in the figure.

In the edge sewing device 100 of the present embodiment,
As shown in FIG. 1, FIG. 2, FIG. 4, and FIG.
The cutting device 300 described below is arranged on the upstream side of the drawing, that is, on the left side of FIG. 1. The cutting device 300 cuts the workpiece W from the long material into a predetermined shape, The cloth is fed to the pressing plate 30 by the cloth feed plate 350. That is, the work material W cut by the cutting device 300 is pulled out below the work cloth feed plate 350 located on the left side of FIG. 4, and the work material W is sewn by the work cloth feed plate 350. 20 is pressed. And this work cloth feed plate 35
0 moves to the position shown in the center of FIG. 4 as it is, and then moves upward as shown in FIG. 5, for example, to release the workpiece W and returns to the current position (the position shown on the left side in FIG. 4). ).

In other words, the workpiece W cut by the cutting device 300 is conveyed to the approximate center of the sewing table 20 by the work cloth feed plate 350, and the pressing plate is set at the approximate center of the sewing table 20. It is handed over to the 30 side.
Therefore, in the edge sewing device 100 of the present embodiment, the guide groove 90b for the rotating member 80 formed on the guide rail 90 is provided only in the right half of the guide rail 90 as shown in FIG. That's enough.

As shown in FIG. 1 or FIG. 3, the sewing table 20 of the present embodiment is horizontally supported at a substantially intermediate position of a machine frame 10 constituting an outer shell of the entire edge sewing apparatus 100. In addition, the sewing table 20 supports the sewing machine 200 as shown in FIG. 1 as a matter of course, receiving the workpiece W. The sewing machine 200 has scissors (not shown) for trimming the workpiece W in the vicinity of the sewing needle 210. In addition, in the sewing machine 200, a supply device for a bias tape, an edge cloth, and the like that is sewn around the trimmed workpiece W may be arranged in addition to scissors.

In the hemming apparatus 100 of this embodiment, FIGS.
As shown in FIG. 3 and the like, the cutting device 300 and the sewing machine 2
A label input section 360 is provided between the label input section and the input section. The label input section 360 is for inputting a small label indicating a product name or a manufacturer name to be sewn on an edge of a towel or a handkerchief between the workpiece W on the sewing table 20 and the pressing plate 30. However, in this case, the pressing plate 30 can be lifted from the workpiece W by a dimension required for label insertion. Then, the label put between the workpiece W and the pressing plate 30 by the label input section 360 is sewn into a single-cloth product at the time of edge sewing by the sewing machine 200.

The pressing plate 30 for pressing the workpiece W onto the sewing table 20 is as shown in FIGS. 2 and 4, and specifically has a shape as shown in FIG. 15 or FIG. It has. That is, when pressing the workpiece W onto the sewing table 20, the pressing plate 30 exposes a part of the workpiece W from the periphery thereof, and with respect to the exposed workpiece W, This allows the workpiece W to be held on the sewing table 20 while allowing cutting and edge stitching by the sewing machine 200. Therefore, as shown in FIG. 26, the pressing plate 30 has a similar shape to the single-cloth product to be completed, and has a slightly smaller outer shape than the single-cloth product.

The shape of the pressing plate 30 is not limited to a rectangle (a square such as a square or a rectangle) as shown in FIG.
26, or a triangular shape as shown in FIG. 26 (c). That is, as described above, a polygonal shape according to the shape of a cloth product such as a handkerchief may be used.

The pressing plate 30 is attached to the lower end of a rotating shaft 40 as shown in FIG. 1 or FIG. 3 and the like, and the rotating shaft 40 is mounted on a guide beam 60 via a supporting device 50. It is supported. The rotation shaft 40 is shown in FIG.
As shown in FIGS. 2 and 13, the lower end has a coupling plate 45 for exchangeably supporting the above-described pressing plate 30, and the upper end has a plurality of side surfaces (this embodiment). In this case, a plate-shaped connection guide member 43 having two notches is integrated. A piston portion 42 is formed substantially at the center of the rotating shaft 40. The rotating shaft 40 is housed in the cylinder when a part of the support device 50 described below is a cylinder. It becomes the piston.

As shown in FIGS. 12 and 13, a mounting portion 44 for the rotating member 80 is provided on the outer periphery of the upper portion of the rotating shaft 40.
The upper end of the rotating shaft 40 projects through the center of the mounting portion 44, and the above-described connection guide member 43 is integrated with the upper end of the rotating shaft 40. Mounting part 4
4 is, as shown in FIG. 16 and FIG.
16 and supports the lower surface of the rotating member 80, for example, with the center line in the vertical direction shown in FIG. The center line of the coupling plate 45 in the sliding direction described below is located at the same position when viewed from the vertical direction of the rotating shaft 40.

As shown in FIGS. 12 and 13, the connecting plate 45 is a rectangular member integrally attached to the lower end of the rotating shaft 40, and the connecting plate 45 is connected to the connecting member 32 on the pressing plate 30 side. 12 is inserted into the dovetail groove 32a formed from the left side in FIG. As shown in FIG. 12 in particular, a handle 46
a is provided, which is lifted by a.
The stopper 46 is configured to always engage with the locking hole 32b of the pressing plate 30 by a spring or the like (not shown).

The pressing plate 30 to be engaged with the connecting plate 45 on the lower end side of the rotating shaft 40 has the connecting members 32 of the same size and shape in all the forms. . As shown in FIG. 13, the connecting member 32 is provided with a dovetail groove 32 surrounding the rotating member 80 on the rotating shaft 40 side.
As shown in FIG. 12, a locking hole 32b is formed in a part of the locking hole 32b so that the lower end of the stopper 46 on the coupling plate 45 side is engaged.

As shown in FIGS. 12 and 13, the supporting device 50 has a vertical supporting cylinder 51 which is horizontally moved on a guide beam 60, and is rotatably housed in the supporting cylinder 51. A cylinder member 53 for guiding the rotary shaft 40 vertically movable therein, two upper and lower fluid pressure chambers 54 and 55 formed between the cylinder member 53 and the rotary shaft 40, and these fluid pressure chambers 54 and 55. The support cylinder 51 of the pressure fluid to the inside
And a fluid port that allows entry and exit from outside.

Since the support device 50 is movable in the horizontal direction with respect to the guide beam 60, a horizontal guide block 52 for supporting the support device 50 is provided as shown in FIG. It is provided integrally with a part of the cylinder 51.
A horizontal guide groove is formed in the horizontal guide block 52, and a guide rail 61 on the guide beam 60 side is assembled in the guide groove. That is, as shown in FIG. 14, the support device 50 is mounted on the guide rail 61 of the guide beam 60 located in a horizontal state so as to be movable in the horizontal direction in the drawing.
The horizontal guide block 52 is attached to the zero guide beam 60.

The support cylinder 51 of the support device 50 and the cylinder member 53 inside the support cylinder 51 are formed with upper and lower fluid ports and fluid ports, respectively. The first and second fluid pressure chambers 54 and 55 formed between them are opened to face each other. Of course, a hose for supplying a pressure fluid such as compressed air is connected to each fluid port. Thereby, the supporting device 50
In other words, the rotary shaft 40 having the piston portion 42 is supported so as to be vertically movable.

Further, as shown in FIG. 12 and the like, a rotating member 80 to be described later is horizontally connected to the upper end of the cylinder member 53 constituting the supporting device 50. At the upper end of the cylinder member 53, a plurality of guide columns 56 are provided to be engaged with the respective notches on the rotary shaft 40 side. These guide posts 56 support the rotation shaft 40 so as not to rotate with respect to the cylinder member 53, and allow the rotation shaft 40 to move vertically with respect to the cylinder member 53.

As shown in FIGS. 3 and 4, the guide beam 60 has its rear end cantilevered by the machine frame 10, and its guide rail 61 moves in the carrying direction of the workpiece W. In a state orthogonal to the machine frame 10,
It is guided and driven in a direction parallel to the direction in which the workpiece W is carried in. The guide beam 60 is driven by a ball screw shaft 72 that is rotationally driven by a driving device 70 provided in a part of the machine frame 10.

The driving device 70 according to this embodiment generates a driving force by the driving motor 71.
The rotational force in the forward or reverse direction by the drive motor 71 is
The power is transmitted to the ball screw shaft 72 via a reduction gear (not shown). This ball screw shaft 72 is
The guide beam 60 is screwed into a ball screw receiving portion formed on a part of the guide beam 60. The rotation of the ball screw shaft 72 causes the guide beam 60 to move forward or backward.

As shown in FIG. 4 or FIG. 26, the rotating member 80 exchangeably connected to the upper end of the cylinder member 53 has arms 80a corresponding to the number of corners of a product such as a handkerchief. A guide roller 81 is provided on the lower surface of the distal end of each arm 80a. Each of these guide rollers 81 is engaged with a guide groove 90b of a guide rail 90 that forms the front end of the upper end of the machine frame 10. It should be noted that the shape of the rotating member 80 depends on the shape of the completed fabric product as shown in FIG.
This is the same as the case of the pressing plate 30 described above, and can be changed as such.

The guide rail 90 has a length and a shape as shown in FIGS. 6 and 7, and as shown in FIGS.
10 and a stopper 91 for locking one of the guide rollers 81, and a guide rail 90 immediately before the guide roller 81 locked by the stopper 91 for sending the guide roller 81 outward. A guide member 94 and a feed port 93 that guide the guide roller 81 immediately after the formed feed port 92, the guide roller 81 locked by the stopper 91, and the inside thereof.
It is provided with. Also, this guide rail 90
7 is assembled in such a manner that it can be moved in the vertical direction in FIG. 7 in parallel with the machine frame 10 by the rail drive device 400 on the machine frame 10 shown on the left and right sides of FIGS. The guide rail 90 is placed at the upper part of the machine frame 10 in FIG.
Are moved in parallel with respect to.

Further, in this guide rail 90,
As shown in FIG.
a and the gate member 95 of FIG.
An opening / closing fluid pressure cylinder 97a connected outside the support shaft of the gate member 95 is provided. In the guide rail 90, as shown in FIG. 11, the feed port 93 is openably and closably covered by a front end 94a of a guide member 94 swingably supported on the guide rail 90 side. A spring 98 biases the front end 94a of the member 94 so that the inlet 93 is always closed.

The outlet 92 and the outlet 93 are connected to each other as shown in FIG.
20 and the guide groove 9 of the guide rail 90 as shown in FIG.
It is long enough along the 0b direction. Specifically, each guide roller 81 on the side of the rotating member 80 of various sizes is used.
The length between them is made sufficiently long so that the size between them and the size of the outlet 92 or the inlet 93 from the stopper 91 in the guide groove 90b becomes the same, and thereby the rotating member 8
Even if the size of 0 changes, the feeding and sending of each guide roller 81 into the guide groove 90b can be sufficiently performed.

In the edge sewing device 100 of the present embodiment, a cutting device 300 is provided on the left side of the sewing table 20 in FIGS. 1 and 2, that is, at the forward end of the pressing plate 30. The cutting device 300 has an original fabric feeding portion provided on the left rear surface of the edge sewing device 100. This web feeder guides a long web to the cutting device 300 side.
At a part thereof, a holding portion for holding a rear portion of the raw material fed by a predetermined size is provided. For example, in the case where the single cloth product is a towel, a part of the raw material to be the workpiece W includes a pile woven part to be a towel and a plain woven part that continues while distinguishing these pile woven parts. Although it is present, the holding portion is for holding the plain weave portion and making it difficult to pass through the next pile weave portion. Feeding is controlled.

The drawing of the web from the holding portion onto the sewing table 20 is performed by the transfer section 340 shown in FIG. 1 and the like. However, the web drawn into a predetermined size must be cut. This cutting is performed by the cutter section provided on the back side of the machine casing 10 of the edge sewing device 100. The transfer section 340 has a knob at its front end for holding the end of the web, and the end is pinched by the knob to draw the web onto the sewing table 20. . Of course, the transfer section 340 is reciprocated on the sewing table 20 by the reciprocating cylinder 342 shown at the left end of FIG. 1, and the reciprocating movement of the reciprocating cylinder 342 is caused by the above-described holding section and cutter section. It goes without saying that it is linked to the above.

The workpiece W cut to a predetermined size from the raw material by the cutting device 300 is transferred to the transfer section 340.
And is placed on the left side of the sewing table 20. Above the work table, a work cloth feed plate 350 pressing the sewing table 20 onto the sewing table 20 is on standby, as shown in FIG. . The work cloth feed plate 350 is supported by the plate vertical cylinder 351 with respect to the support beam 352, and moves up and down by the operation of the plate vertical cylinder 351. When the work cloth feed plate 350 moves downward, the workpiece W is sewn. Stand 2
It is to be pressed on zero.

As shown in FIG. 4, the support beam 352 supporting the work cloth feed plate 350 is disposed at the rear side of the machine frame 10 in parallel with the guide rail 90 for the rotating member 80. The support beam 352 is connected to a piston rod of a beam feed cylinder 354. The beam feed cylinder 354 has the cylinder fixed to the machine frame 10 and is connected to a control device including an air supply source (not shown) so that the drive can be controlled.

As a result, the work cloth feed plate 350 is
4 is reciprocated by the operation of the beam feed cylinder 354 from the original position shown on the left side of the drawing to the center of the drawing in FIG. 4, and the plate vertical cylinder 351 moves up and down at each moving end. This will be described in accordance with the movement of the workpiece W.
50, the workpiece W cut by the cutting device 300 is pressed onto the sewing table 20, and the beam feed cylinder 354 is operated as it is, whereby the workpiece W is moved from the left side in FIG. It is sent to the center. Thereafter, the work cloth feed plate 350 is lifted by the operation of the plate vertical cylinder 351 to release the pressing of the workpiece W, and the beam feed cylinder 354 is operated to operate the work cloth feed plate 3.
Numeral 50 returns to the original position and waits for the next workpiece W.

In the edge sewing device 100 of the present embodiment, a label input section 260 is provided between the cutting device 300 and the sewing machine 200. This label input section 360
Is between the workpiece W on the sewing table 20 and the pressing plate 30,
A small label with the name of the product or the name of the manufacturer to be sewn on the edge of a towel, handkerchief, or the like is inserted. Can be lifted. Then, the label put between the workpiece W and the pressing plate 30 by the label input section 360 is sewn into a single-cloth product at the time of edge sewing by the sewing machine 200.

In the edging apparatus 100 according to the present invention, the guide rail 90 for guiding each guide roller 81 of the rotating member 80 can be moved in parallel with the machine frame 10. What is performed is the rail drive device 400 described above. This rail drive device 400
As shown in FIG. 6, a rail 410 is provided on each of the right and left sides of the machine frame 10.
As shown in FIGS. 7 and 8, a rail base 411 supporting the left and right ends of the guide rail 90 is movably mounted in the vertical direction in FIG.

As shown in FIG. 8, a thread processing cylinder 413 and a retraction cylinder 414 are sequentially connected to each rail base 411, and the retraction cylinder 414 is
It is connected to a support plate 412 fixed on another rail base 411 that can move upward. A rounded adjusting shaft 415 is screwed to the support plate 412, and the rounded adjusting shaft 41 is
The support plate 412 moves on the rail 410 in accordance with the amount of rotation of 5. As shown in FIG. 7, the rounded corner adjusting shafts 415 are arranged on both the left and right sides of the machine frame 10, respectively, and these rounded corner adjusting shafts 415 are synchronously rotated by a synchronous shaft 416 arranged therebetween. It is like that. Accordingly, each support plate 412 advances and retreats by the same amount on each rail 410 according to the amount of rotation of the synchronous shaft 416 by the shaft handle 417, whereby the guide rail 90 is parallel to the machine frame 10. The position is to be adjusted.

In the above embodiment, the synchronous shaft 416 is rotated by the rotation operation of the shaft handle 417. However, this depends on the size of the rotating member 80 to be used and whether square sewing or circular sewing is performed. This is because the positions of the pressing plate 30 and the needle position 220 can be easily confirmed by a manual operation while visually confirming the positions. Of course, the rotation operation of the synchronous shaft 416 may be performed by means of a numerically controlled drive motor or the like.

The position adjustment of the guide rail 90 by the operation of the shaft handle 417 is performed independently of the thread processing cylinder 413 and the retraction cylinder 414.
The thread processing cylinder 413 and the retraction cylinder 414 operate in the following cases. That is, the thread processing cylinder 413 first moves the guide rail 90 to facilitate the thread processing when the edge stitching of the workpiece W is completed.
Is drawn rightward in FIG. In other words,
At the end of the edge stitching, the workpiece W and the sewing needle 210 are at the same position, and the thread processing at the end cannot be performed as it is, so that the workpiece W and the sewing needle 210 are separated by the thread processing cylinder 413. Thus, yarn processing can be performed.

On the other hand, the evacuation cylinder 414 is operated when the press plate 30 after the edge stitching operation is going to receive the next workpiece W. It is drawn more than the place of the thread processing cylinder 413 that has been used. By doing so, the pressing plate 30 that is going to return to the original position does not interfere with the sewing machine 200, and the safety of the entire edge sewing device 100 is ensured.

By the way, when the corners of the single-cloth product are rounded and the edge of the rounded corner is sewn, the corner of the workpiece W rotated by the pressing plate 30 is used. In some cases, wrinkles are easily formed at the corners due to the pressing force of the presser foot of the sewing machine 300, and clean edge sewing cannot be performed. In such a case, the following two operations may be performed.

The first operation is to slightly lift the presser foot of the sewing machine 300, for example, immediately before the workpiece W starts rotating by the pressing plate 30. Although the floating amount of the presser foot may vary depending on the thickness of the workpiece W, it is to reduce the pressing force by the presser foot.
It is good to raise about mm. The second operation is to blow air from the vicinity of the presser to the surface of the workpiece W at the same time as the presser rises. The direction of the air blowing is the same as the direction of rotation of the workpiece W because the purpose is to prevent wrinkles due to the rotation of the workpiece W. By performing the above two operations, the wrinkles generated at the respective corners of the workpiece W rotated by the pressing plate 30 are lengthened, so that the edge stitching is performed in a complete state.

In the hemming apparatus 100 of the present embodiment, as shown in FIG. 18 and FIG.
0 is set to carry out of the machine. In this product transfer device 500, the end portion of the single cloth product at the rear end side of the sewing table 20 is gripped by a gripping device 510 that reciprocates by a forward and backward movement device 511, and the stacked products are sequentially stacked on a lifting table 514. Things.

By the way, in order to grasp the end portion of the single-cloth product placed on the sewing table 20 by the grasping device 510, at least a portion through which the lower portion of the grasping device 510 passes must be on the sewing table 20 side. Must. Therefore,
As shown in FIG. 19, in the rim sewing device 100 of the present embodiment, a plurality of insertion grooves 23 through which the gripping device 510 can pass are formed at the right end of the sewing table 20. The left end sides of these insertion grooves 23 are provided within the rotation range of the pressing plate 30 that presses the large workpiece W so as to hold the end of the small single cloth product.

As described above, when each of the insertion grooves 23 extends within the rotation range of the pressing plate 30, each of the insertion grooves 23 becomes a step when the pressing plate 30 rotates, so that abnormal noise is generated. In this embodiment, since each of the insertion grooves 2
The upper and lower plates 513 are housed in the left side portion of the drawing 3 so as to be vertically movable, and when processing a large workpiece W, the upper and lower plates 513 are raised by an upper and lower cylinder 513a provided below the sewing table 20, The upper surfaces of the upper and lower plates 513 and the sewing table 20 are made the same so that the pressing plate 30 can rotate smoothly. Of course, this gripper 510
Is driven by the grip drive 512 shown in FIG.

Now, the single-cloth product is pulled out of the edging device 100 by the gripping device 510 and
14 are successively stacked on each other, but when the single fabric product is dragged on the single fabric product already drawn,
Since the position shift of the single fabric product before this occurs, in the product transport device 500 of the present embodiment, as shown in FIG. The plates 515 are retracted so as to be sequentially stacked. That is, the product transfer device 50
0, the rear end of the sewing table 20 and the retracted gripper 510
And a temporary mounting plate 515 that is moved back and forth in a direction orthogonal to the reciprocating direction of the gripping device 510. The temporary mounting plate 515 It is located below and does not interfere with the movement of the gripper 510.

The elevating table 514 on which the single-cloth products are sequentially stacked descends in order according to the amount of the single-cloth products, and the upper surface on which the single-cloth products are to be stacked is located at a substantially constant position. Is controlled as follows.

[0097]

As described in detail above, first, in the invention according to claim 1, as described in the above embodiment, "the work material W on the sewing table 20 supported horizontally by the machine frame 10".
, A guide beam 60 that supports a rotating shaft 40 integrated with the pressing plate 30, a driving device 70 that moves the guiding beam 60, and the pressing plate 30 and the rotating shaft 40 that are integrated. Of the workpiece W pressed by the pressing plate 30, a guide rail 90 provided on the machine frame 10 for guiding a plurality of guide rollers 81 provided on the rotating member 80, The sewing machine 200 includes a sewing machine 200 that performs edge stitching. The pressing device 30 presses the workpiece W and the rotating member 80 integrated therewith.
Edge sewing device 100 that can be performed only by the reciprocating motion of the guide beam 60 by the
When the corner portion of each workpiece W is to be corner-stitched, the guide groove 90b of the guide rail 90 is disposed outside the needle position of the sewing machine 200, and A guide groove 9 for circularly sewing the corner of the workpiece W
0b can be freely selected to be disposed inside the needle position, and when returning to the original position integrally with the rotating member 80, the pressing plate 30 can be retracted from the sewing machine 200, and the guide is provided. In accordance with a change in the distance between the guide roller 81 engaged with the stopper 91 in the rail 90 and the front and rear guide rollers 81, the guide groove 90b of each guide roller 81
The rotary member 80 and the pressing plate 30 are exchanged with respect to the rotary shaft 40 by making the size of the outlet 92 and the inlet 93 of the guide rail 90 sufficient to enable the sending and receiving from the rotary shaft 40. The feature is that it can be freely adjusted. This makes it possible to perform edge sewing work of various forms of single-fabric products at a high speed, has high versatility, and greatly simplifies the configuration of the entire apparatus. Edge stitching device 1 that can reduce the cost for edge stitching of a single cloth product or the like as a result
00 can be provided.

[0098] In the invention according to claim 2, the edge sewing device 100 according to claim 1 is referred to as "press plate 3".
0 is attached to the lower end of the rotary shaft 40 so as to be freely detachable in the horizontal direction, and a square mounting portion 44 is provided on the upper portion of the rotary shaft 40.
And a mounting hole 82 formed at the center of the rotating member 80 is inserted into the mounting portion 44.
0 is pressed against the mounting portion 44 side and fixed.
0 and the pressing plate 30 can be attached to the rotating shaft 40 side in a fixed direction ", whereby the object of the invention according to claim 1 can be more reliably achieved. An edge stitching apparatus 100 capable of very easily changing an edge stitching operation according to a form of a single cloth product, thereby shortening an edge stitching time of the single cloth product.
Can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a hemming device according to the present invention.

FIG. 2 is a plan view schematically showing a state of the edge sewing device on a sewing table.

FIG. 3 is a schematic right side view of the edge sewing device.

FIG. 4 is a plan view schematically showing a relationship between a rotating member of the edge sewing device, a guide beam of a rotating shaft supporting the same, a driving device, and a beam feed cylinder for a work cloth feed plate. It is.

FIG. 5 is a side view schematically showing a relationship between a work cloth feed plate and a plate vertical cylinder of the edge sewing device.

FIG. 6 is a front view mainly showing a state of a guide rail constituting the edge sewing device.

FIG. 7 is a plan view showing the relationship between the guide rail and the rail drive device.

FIG. 8 is a right side view of the same.

9 is a partially enlarged sectional view taken along line 1-1 in FIG. 6;

FIG. 10 is a partially enlarged cross-sectional view showing a structure of a delivery port formed in a guide rail.

11 is a partially enlarged cross-sectional view showing a structure of a feed port formed in a guide rail, (a) when a guide roller enters a guide groove, and (b) a guide roller enters a guide groove. Each shows when it entered.

FIG. 12 is a partially broken enlarged front view showing a structure around a rotary shaft connecting a pressing plate and a rotating member.

FIG. 13 is a partially broken enlarged side view showing the rotary shaft.

FIG. 14 is a schematic side view of the edge sewing device showing a positional relationship between a guide groove of a guide rail and a sewing needle.

FIG. 15 is a plan view of a rotating member showing a relationship between a shape difference, a workpiece, and a needle position.

16A and 16B show the relationship between the pressing leg on the rotating shaft side and the rotating member fixed thereby, (A) is a partially enlarged sectional view, and (B) is a plan view of a central portion of the rotating member. It is.

17A and 17B show the rotating member when the fixing by the pressing leg is released, and FIG.
FIG. 4 is a partial plan view of a rotating member.

FIG. 18 is a partial front view when a product conveying device is attached to the edging device of the present invention.

FIG. 19 is a partially enlarged plan view showing a relationship between the product conveyance device and the machine frame of FIG. 18;

FIG. 20 is a plan view schematically showing a guide state of each guide roller with respect to a guide rail of a rotating member.

FIG. 21 is a plan view sequentially showing a relationship between a rotating member and a workpiece when performing square stitching.

22 is a partially enlarged plan view showing how the pressing plate shown in FIG. 21 moves with respect to the sewing machine needle to perform the corner stitching.

FIG. 23 is a plan view sequentially showing a relationship between a rotating member and a workpiece when performing circular sewing.

24 is a partially enlarged plan view showing how the press plate shown in FIG. 23 moves with respect to the sewing machine needle to perform circular sewing.

FIG. 25 shows specific examples of square sewing and circular sewing.
(A) Squared product with square product, (b) circular product with same product, (c) square product with rectangular product, (d) circular product with same product Each is shown.

FIG. 26 is a plan view showing another example of a single-cloth product on which edging is formed by the edging device of the present invention.

FIG. 27 is a plan view showing a conventional edge sewing device.

FIG. 28 shows another conventional edge sewing device,
Is a front view, (b) is an enlarged plan view of the cam member, and (c) is a plan view showing the movement of the workpiece step by step.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 edging device 10 machine frame 12 elastic stopper 16 compression spring 17 switch 20 sewing table 21 sewing machine table 23 insertion groove 30 pressing plate 31 spring 32 connecting member 32a dovetail groove 32b locking hole 40 rotating shaft 41 pressing plate mounting portion 42 piston portion 43 connecting guide member 44 mounting portion 45 connecting plate 46 stopper 46a handle 47 pressing leg 48 pressing handle 50 support device 51 support cylinder 53 cylinder member 60 guide beam 61 guide rail 70 drive device 72 ball screw shaft 80 rotating member 80a arm 81 guide roller 82 Mounting Hole 90 Guide Rail 91 Stopper 92 Outlet 93 Inlet 94 Guide Member 94a Front End 95 Gate Member 96 Opening Cylinder 97a Opening Fluid Pressure Cylinder 98 Tension Spring 200 Sewing Machine 210 Sewing Needle 220 Needle Position 300 Cutting device 340 Transfer unit 350 Work cloth feed plate 351 Plate vertical cylinder 352 Support beam 353 Guide rail 354 Beam feed cylinder 360 Label input unit 400 Rail drive unit 410 Rail 411 Rail stand 412 Support plate 413 Thread processing cylinder 414 Evacuation cylinder 415 Angle Round adjustment shaft 416 Synchronous shaft 417 Shaft handle 500 Product transfer device 510 Gripping device 511 Back-and-forth moving device 512 Gripping drive 513 Upper and lower plate 513a Vertical cylinder 514 Elevating platform 515 Temporary mounting plate W Workpiece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-26480 (JP, A) JP-A-4-189388 (JP, A) JP-A-7-124357 (JP, A) JP-A-7-124 171281 (JP, A) JP-A-9-155085 (JP, A) Patent 2716343 (JP, B2) Patent 2733028 (JP, B2) Japanese Patent Publication No. 6-83751 (JP, B2) Japanese Utility Model Publication 3-6290 (JP) , Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) D05B 35/00-35/12 D05B 21/00

Claims (2)

(57) [Claims] 1. A pressing plate for pressing a workpiece on a sewing table horizontally supported by a machine frame, a guide beam for supporting a rotary shaft integrated with the pressing plate, and moving the guide beam. A driving device, a rotating member integrated with the pressing plate via a rotating shaft, a guide rail provided on the machine frame for guiding a plurality of guide rollers provided on the rotating member, and the pressing plate A sewing machine that performs edge stitching of the workpiece pressed in the above, the longitudinal movement and rotation of the pressing plate pressing the workpiece and a rotating member integral therewith, at a predetermined angle, An edge sewing device that can be performed only by reciprocating movement of the guide beam by a driving device, wherein the guide rail is assembled so as to be able to move in parallel to the machine frame, so that a corner portion of each workpiece can be formed. From the needle position of the sewing machine in the guide groove of the guide rail when performing square stitching Side and the inner side of the guide groove at the time of circular stitching at the corner of each workpiece can be freely selected and integrated with the rotating member. When returning to the original position, the pressing plate can be retracted from the sewing machine, and according to a change in the interval between the guide roller engaged with the stopper in the guide rail and the guide rollers before and after the guide roller. The size of the outlet and the inlet of the guide rail is sufficient so that each guide roller can be sent and received from the guide groove, and the rotating member and the pressing plate are rotated. An edge sewing device for a single-cloth product, which is replaceable with respect to a shaft. 2. The pressure plate is attached to a lower end of the rotary shaft so as to be freely detachable in a horizontal direction, and a rectangular mounting portion is formed on an upper portion of the rotary shaft, and the rotating member is provided on the mounting portion. The rotation member is pressed against the mounting portion and fixed so that the rotation member and the pressing plate can be mounted on the rotation shaft side in a fixed direction. An edge sewing device for a single-piece product according to claim 1, wherein